Swaped-body reset after finishing caves of eater questline

I used the trick to swap the body of my mutant with someone else (a legendary ichor merchant) using domination and then kill my old body. In the caves of eater questline, after speaking to Rainwater Shomer in thin world and asking to go back to qud, i teleported back in qud and my legendary ichor merchant was reset to the first time I met him (level 1 + inventory).